EP3044865A1 - Systeme de commande d'une charge electrique - Google Patents
Systeme de commande d'une charge electriqueInfo
- Publication number
- EP3044865A1 EP3044865A1 EP14761881.3A EP14761881A EP3044865A1 EP 3044865 A1 EP3044865 A1 EP 3044865A1 EP 14761881 A EP14761881 A EP 14761881A EP 3044865 A1 EP3044865 A1 EP 3044865A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- power converter
- output
- control
- voltage
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011159 matrix material Substances 0.000 description 12
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
- H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
Definitions
- the present invention relates to a control system of an electric charge.
- the object of the invention is therefore to propose a control system employing several power converters connected in parallel by the DC bus on one side, by the motor voltages on the other through an inductance circuit, to control a electrical load, said control system being arranged to ensure a balancing of the output currents between the power converters connected in parallel.
- control system of an electric charge comprising: A first power converter and a second power converter connected in parallel, each power converter comprising an inverter stage having an output connected to the electrical load,
- the first control unit having a main control module arranged to determine a first output voltage to be applied to the electrical load, said first output voltage being determined according to the output current of the first power converter;
- the second control unit comprising a main control module arranged to determine a second output voltage to be applied to the electrical load, said second output voltage being determined from the output current of the second power converter, and a control module secondary circuit arranged to determine a correction voltage to be applied to said second output voltage, said correction voltage being determined from the difference between the output current of the second power converter and the output current of the first power converter.
- the first power converter and the second power converter each comprise a DC supply bus applying a DC voltage to their inverter stage and the first power converter and the second power converter are connected to each other by their continuous supply bus.
- the DC power supply bus of the first power converter and the DC power supply bus of the second power converter each comprise a positive electric potential supply line and a negative electric potential power supply line.
- the output of the first power converter is connected to the output of the second power converter.
- FIG. 1 represents the control system of the invention
- FIG. 2 schematically illustrates the control principle implemented in the control system of the invention.
- the control system of the invention is intended for the control of an electric load, such as for example an electric motor M.
- the control system has the particularity of having several power converters connected in parallel to the same electric motor.
- a speed variator VV k (k ranging from 1 to n) comprises:
- an input IN k comprising, for example, three input phases
- a RECk rectifier stage connected by the input to an electrical distribution network R,
- a DC supply bus connected to the rectifier stage and comprising a positive potential supply line and a negative potential supply line, the rectifier stage being arranged to rectify the voltage supplied by the electrical distribution network; in order to apply a DC voltage to the DC bus,
- an inverter stage INV k comprising a plurality of switching arms responsible for cutting the voltage supplied by the DC supply bus into a variable voltage for the electric motor M
- an output OUTk comprising, for example, three output phases, the output being connected to the switching arms of the inverter stage INVk of to receive an output voltage ⁇ ⁇ ⁇ .
- An output inductor l_k is connected to the output.
- variable speed drives are connected in parallel by connecting the inputs to each other and the outputs to each other.
- variable speed drives are also connected to each other by their continuous supply bus. The positive supply lines of the variable speed drives are thus connected together and the negative supply lines of the variable speed drives are connected to each other.
- index ⁇ is used to represent i o each of the three output phases.
- the control system of the invention also comprises a plurality of control units UCk (k between 1 and n), a separate control unit being assigned to the control of the inverter stage INVk of each variable speed controller VVk.
- a control unit UCk comprises a main control module M k (k between 1 and n) receiving as input an estimate or a measurement of the output current of the controlled variable speed drive and determines, according to one or more instructions and depending on the parameters of the electric motor, an output voltage to be applied to the electric motor. More specifically, the output current obtained is multiplied by the number n of the system speed controllers so as to determine the motor current is then used to determine the motor voltage applied.
- each control unit UCk autonomously determines an output voltage v a k to be applied to the electric motor M and each variable speed drive VV k is controlled autonomously to apply this output voltage. to the electric motor M.
- L n represents the output inductance of each variable speed drive
- the inductances are preferably chosen identical.
- the objective of the invention is to allow a control of the currents of the drives while taking into account the current to be applied to the electric motor. This objective is expressed as follows:
- the invention consists in making sure that at least one of the output currents of a variable speed drive is known to the control units of the other variable speed drives of the system. .
- the simplest way is to choose a speed controller called "master" whose output current is sent to the control units of the other controllers speed drives.
- the "master" variable speed drive is, for example, the row 1 controller associated with the row 1 control unit.
- the so-called “slave” variable speed drives are then those of ranks 2 to n, each associated with a respective control unit of rank 2 to n.
- control unit of the "master" speed controller of rank 1 comprises a main control module M- as described hereinabove. above, to determine the output voltage ⁇ ⁇ to be applied at the output of the "master” variable speed drive as a function of the output current ⁇ ⁇ of the "master” speed controller VV-i.
- the control units of ranks 2 to n each comprise a main control module M k (k between 2 and n) as described above, which is arranged to determine the output voltage of the inverter. controlled speed and a secondary control module M2_k (k between 2 and n).
- This secondary control module is arranged to determine a correction voltage AV a to be applied to the output voltage v a determined by the main control module M k .
- the secondary control module M 2 _k receives, as input, the output current of the inverter controlled so that the output current ⁇ ⁇ ⁇ the inverter VVI rank 1 .
- the secondary control module M 2 _k is arranged to determine the difference between the output current of the variable speed controller VV k controlled and the output current ⁇ ⁇ ⁇ of the drive controller of rank 1 and to inject the said difference into a corrector to proportional action or proportional-integral corrector Pl. From the difference injected at the input, the corrector determines a correction voltage to be applied to the output voltage determined by the main control module. For each variable speed drive, this correction voltage therefore reflects the difference to be corrected between the output current of said variable speed drive and the reference output current of the variable speed drive selected as "master".
- the secondary control module thus implements a control algorithm expressed by the following relations, for a "slave" speed variator k (k between 2 and n):
- the principle of the invention is therefore to ensure that the output current of one of the two variable speed drives is supplied to the other variable speed drive. If the system has more than two speed drives connected in parallel, the same principle can be used so that one of the variable speed drives supplies its output current to the other drives in the system.
- a first magnitude V a Mj serves to control the engine.
- a second variable V Ea i serves to control the balance of currents of the drives.
- Line 1 of the system (3) relates to the control of the motor.
- ⁇ Vai n V aM REF + ⁇ ⁇ , ⁇
- control voltages must be defined by the following relationships:
- the function f has the property of stabilizing the system (4).
- the matrix K has the property of having all these eigenvalues of strictly negative real parts. This property provides an exponential convergence to zero of the current differences in the case of the system (3).
- the matrices Kp and Ki have the property of stabilizing the system thus composed, that is to say that the matrix K P has the property of having all its eigenvalues of strictly negative real parts, where
- N- i is the identity matrix of dimension N-1
- 0 N- i is the null matrix of dimension N-1
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1358733A FR3010593B1 (fr) | 2013-09-11 | 2013-09-11 | Systeme de commande d'une charge electrique |
PCT/EP2014/069389 WO2015036479A1 (fr) | 2013-09-11 | 2014-09-11 | Systeme de commande d'une charge electrique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3044865A1 true EP3044865A1 (fr) | 2016-07-20 |
EP3044865B1 EP3044865B1 (fr) | 2021-11-03 |
Family
ID=49753349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14761881.3A Active EP3044865B1 (fr) | 2013-09-11 | 2014-09-11 | Systeme de commande d'une charge electrique |
Country Status (6)
Country | Link |
---|---|
US (1) | US9755547B2 (fr) |
EP (1) | EP3044865B1 (fr) |
CN (1) | CN105453407A (fr) |
ES (1) | ES2899773T3 (fr) |
FR (1) | FR3010593B1 (fr) |
WO (1) | WO2015036479A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105790673A (zh) * | 2016-05-23 | 2016-07-20 | 肥西县鑫山机械厂 | 一种交流电机变频调速*** |
JP6647470B1 (ja) | 2018-08-06 | 2020-02-14 | 三菱電機株式会社 | 電力変換装置 |
KR102539725B1 (ko) * | 2021-09-07 | 2023-06-05 | 광주과학기술원 | 3상 인버터 병렬 운전 시스템 및 직류단 전압 보정 방법 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2515903B2 (ja) * | 1990-03-02 | 1996-07-10 | 株式会社日立製作所 | 交流電動機駆動システムとその制御方法 |
GB2264403B (en) * | 1992-02-18 | 1996-09-04 | Hitachi Ltd | An apparatus for controlling parallel running of inverters |
US6751106B2 (en) | 2002-07-25 | 2004-06-15 | General Electric Company | Cross current control for power converter systems and integrated magnetic choke assembly |
US7327111B2 (en) | 2005-08-12 | 2008-02-05 | Siemens Energy & Automation, Inc. | System and method for parallel control of variable frequency drives |
FI118875B (fi) * | 2006-09-26 | 2008-04-15 | Vacon Oyj | Invertterien rinnankytkentä |
JP4923918B2 (ja) * | 2006-09-28 | 2012-04-25 | 株式会社明電舎 | インバータ装置の並列運転装置 |
US7492058B2 (en) * | 2006-11-17 | 2009-02-17 | Toshiba International Corp. | Modular uninterruptible power supply with loadsharing between modules |
TW200922087A (en) * | 2007-11-02 | 2009-05-16 | Tatung Co Ltd | Paralleled power conditioning system with circulating current filter |
US8188694B2 (en) | 2010-07-16 | 2012-05-29 | Rockwell Automation Technologies, Inc. | Parallel power inverter motor drive system |
-
2013
- 2013-09-11 FR FR1358733A patent/FR3010593B1/fr not_active Expired - Fee Related
-
2014
- 2014-09-11 CN CN201480044230.6A patent/CN105453407A/zh active Pending
- 2014-09-11 ES ES14761881T patent/ES2899773T3/es active Active
- 2014-09-11 EP EP14761881.3A patent/EP3044865B1/fr active Active
- 2014-09-11 WO PCT/EP2014/069389 patent/WO2015036479A1/fr active Application Filing
- 2014-09-11 US US14/913,880 patent/US9755547B2/en active Active
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015036479A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR3010593B1 (fr) | 2017-05-19 |
CN105453407A (zh) | 2016-03-30 |
FR3010593A1 (fr) | 2015-03-13 |
EP3044865B1 (fr) | 2021-11-03 |
US9755547B2 (en) | 2017-09-05 |
US20160211766A1 (en) | 2016-07-21 |
WO2015036479A1 (fr) | 2015-03-19 |
ES2899773T3 (es) | 2022-03-14 |
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